M16 Parts + AR15 Receiver?

W

w4klr

Moderator
I know I know, this topic is probably taboo. I'm researching things between the AR15 and M16 for a class project. I've read about the DIAS and lightning link, but in theory, couldn't you just buy a stripped AR15 receiver, install m16 internals and bolt carrier and have an M16, even though it is uber illegal(not worth my 10yrs/250k)? When I say internals, I mean EVERYTHING, springs, trigger, selector, disconnecter... Input is much appreciated.
 
You would need to make some modifications to the receiver to allow it to accept the full auto parts.

HERE is a good comparison of the differences between the AR and M16.
 
Not what he asked.

Unless you had a DIAS.
Click to expand...
..

but in theory, couldn't you just buy a stripped AR15 receiver, install m16 internals and bolt carrier and have an M16, even though it is uber illegal(not worth my 10yrs/250k)? When I say internals, I mean EVERYTHING, springs, trigger, selector, disconnecter...
Click to expand...
 
That is true, to convert it to a factory spec M16 it would take some machining. But it will take full auto parts with no work to the receiver, assuming you have a DIAS, which I will point out, IS a "full auto part".
 
The DIAS along with a M16 bolt carrier, hammer, selector, and disconnector will convert an AR-15 to full auto without any modifications to the receiver.

To install all of the actual M16 full auto parts into an AR-15 receiver (ie converting the AR into an actual M16), the receiver would need to be modified for them to fit.
 
PMDW,

That was in response to his question about newer receivers being able to accept a DIAS, not your previous comment. :)
 
Last question..

And with the m16 parts + dias, does that allow selective and full auto capability, or full auto only.
 
Looks like it should duplicate the fuctionality of an original M-16 group, both semi- and full-auto. Unless you disclude the disconnector, though that would be kinda stupid.

Now I have a question: anyone have a link to something showing how a 3-round-burst mechanism is set up/works? I have a general idea, but I'm curious as to how they do it in something like an M-16/M-4.
 
The M4 uses one of the worst methods of achieving 3-round bursts in existence. It uses a ratchet that ends up giving different trigger pulls for each position. The HK version is far superior.

Diagram is in tm9-1005-319-23.pdf starting on page 3-88.
 
Abelew,
The three round burst in the 16 is bad not b/c of the accuracy but b/c it is not resetable. That is if you only fire one round of the burst, the next trigger pull will only fire two rounds then reset. Or if you fire two rounds of the burst, then the next trigger pull will only fire the single remaining round of the burst then reset. The HK version will fire the full burst every time.
 
Jclark - it is illegal to do so - will make the gun a machinegun, even if you don't add all of the M16 parts - even if it doesn't fire full-auto. The only M16 part you can safely use in an AR15 is the bolt carrier. At least one M16 part can't be added without machining - perhaps more, depending on what AR15 receiver is used.

Not sure why this thread from 2005 was resurrected?:confused:
 
There is an actual case of this where the guy got prison time. There was a goofball in Wisconsin who put one of those A2 burst lower parts kits in a piece of sh1t Olyimpic Arms rifle.

This guy was a self appointed "Mr. Helper". He loaned this gun out to someone and told the kid not to flip the selector to the auto position. Naturally the guy flipped it to auto and ended up getting some full auto fire. He did this at the range, and it ended up getting reported to authorities who investigated.

In the end, ATF nailed the guy because the gun would fire MORE than ONE round per pull of the trigger. It didn't matter what parts he had. It boiled down to the ATF getting it to fire full auto.... and it infact did.

The guy took his claim that it was a malfuction and paraded it all over AR15.com, but when you have an A2 fire control group installed, that story isn't really holding water.
 
Not trying to be a smart azz but atf told me that as long as it doesn't have any hole and isn't converted to select fire you CAN have m16 parts in a semi gun. like a m16 full auto bcg and so on! i heard this from Al Lamburger ATF inspector.
 
Bolt carrier group is fine. But trigger components is walking a fine line, and if the ATF takes you to court, they could argue you were attempting to manufacture an illegal machine gun....
 
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